/**
 * Copyright 2014 opencxa.org
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.cxa.rpc.cloud.server.components;

import org.cxa.rpc.cloud.server.DeviceProxy;
import org.cxa.rpc.cloud.server.IoBroker;
import org.cxa.rpc.messages.NotificationRpcMessage;
import org.cxa.rpc.messages.RequestRpcMessage;
import org.cxa.rpc.messages.ResponseRpcMessage;
import org.cxa.rpc.provider.Component;
import org.cxa.rpc.provider.RpcException;
import org.cxa.rpc.provider.RpcException.RpcError;


/**
 * @author Christopher Armenio
 *
 */
public class DeviceComponent extends Component
{
	public static final String PATH_PREFIX = "dev";
	
	
	public DeviceComponent()
	{
		this(PATH_PREFIX);
	}
	
	
	protected DeviceComponent(String pathPrefixIn)
	{
		super(pathPrefixIn);
		
		this.setCatchAllHandler(new CatchAllHandler()
		{
			@Override
			public void onRequestReceived(RequestRpcMessage msgIn, String[] remainingPathComponentsIn)
			{
				// make sure we have enough components for a serial number
				if( (remainingPathComponentsIn.length < 1) )
				{
					getRootTreeProvider().sendMessage(new ResponseRpcMessage(((RequestRpcMessage)msgIn), RpcException.exceptionFromError(RpcError.INVALID_DEST_PATH)));
					return;
				}
				
				// try to find the device proxy by its serial number
				DeviceProxy destDp = DeviceComponent.this.getDeviceProxy_bySerialNumber(remainingPathComponentsIn[0]);
				if( destDp == null )
				{	
					getRootTreeProvider().sendMessage(new ResponseRpcMessage(((RequestRpcMessage)msgIn), RpcException.exceptionFromError(RpcError.DEVICE_OFFLINE)));
					return;
				}
				
				// forward the message along
				destDp.forwardMessage(msgIn);
			}

			@Override
			public void onResponseReceived(ResponseRpcMessage msgIn, String[] remainingPathComponentsIn)
			{
				// make sure we have enough components for a serial number
				if( (remainingPathComponentsIn.length < 1) )
				{
					// can't have a response (error) to a response...just drop it
					return;
				}
				
				// try to find the device proxy by its serial number
				DeviceProxy destDp = DeviceComponent.this.getDeviceProxy_bySerialNumber(remainingPathComponentsIn[0]); 
				if( destDp == null )
				{
					// can't have a response (error) to a response...just drop it
					return;
				}
				
				// forward the message along
				destDp.forwardMessage(msgIn);
			}

			
			@Override
			public void onNotificationReceived(NotificationRpcMessage msgIn)
			{	
			}	
		});
	}
	
	
	protected DeviceProxy getDeviceProxy_bySerialNumber(String serialNumberIn)
	{
		return IoBroker.getSingleton().getDeviceProxy(serialNumberIn);
	}
}
